Corrugating machine



May 12, 1931. J. WAGNER CORRUGATING MACHINE Filed June 1s. 1929 NVENTORmaf QBMI Y--M ATTORNEY@ Patented May 12, 1931 UNITED STATES- PATENTOFFICE JOSHUA WAGNEIQOF BROOKLYN, NEW YORK, ASSIGNOR, BY MESNEASSIGNMENTS, TO

TION F NEW YORK CORRUGATTNG MACHINE Application tiled June 18,

'8 1927, wherein the corrugations run o liquely across the sides of thebox. Blanks for boxes of the above type can be more economically madefrom corrugated paper board having the oblique corrugations abovereferred to, than from corrugated paper board having the transversecorrugations which are produced by machines of the types now in use.`

The formation of oblique corrugations, however, presents certaindiiiiculties, particularly in maintaining a continuous feeding of theweb in the direction of its length and at the same time avoiding tearingof the sheet during the operation `offorming' the oblique corrugations.The present in- 'vention aims to avoid the above and other difficultiesin such manner as to enable the machine to form oblique corrugationswithout injury to the sheet andv at practical speeds. Further objectsand advantages of the invention will be in part obvious and in partspecifically pointed out in the description hereinafter contained which,taken in conjunction with the accompanying drawings, discloses apreferred embodiment of the invention; such embodiment, however, is tobe considered merely as illustrative of its principles. In the drawings--Fig. 1 1s a plan view with certain -parts cut away of al corrugatingmachine constructed in. accordance with the invention.

Fig. 2 is a side View with certain parts cut away of the machine shownin Fig. 1.

The invention is illustrated as applied to a corrugatin machine whereinthe paper web 1 to be o liquely corrugated is fed continuously in alengthwise direction, between a pair of mating corrugated dies which areprovided with corrugations running obliquely to the path of travel ofthe sheet, which dies successively engage along obliqe'lines 1929.Serial No. 371,909.

extendin all the way across the sheet, and thereby orm the entire lengthof each corrugation simultaneously, and form the complete corrugationssuccessively. vWith this mode of operation the contraction of the paperweb or` sheet, which necessarily occurs when the corrugations areformed, takes place in a lengthwise direction, avoiding any transversecontraction suiiicient to place undue strains o n the sheet as itxpassesbetween the dies.

In the illustrated form of the invention, one set of corrugated dies iscarried by an endless conveyor made `up of chain-links 2 which lpassaround sprocket wheels 3, which latter are supported on suitable frames4. As shown the oblique corrugations are formed in fiat die members 5mounted on alternate chain-links 2, and the upper flight of the conveyorruns over a pair of gulde rails 6, which serve to hold the correspondingdies in plane and abutting relation. As shown the chain-links 2 areprovided with ,rollers 7 which run along the guide rails 6.

The remaining die member is shown in the form of a roller 8mountedobliquely` above the traveling conveyor, and having longitudinalcorrugations adapted to mesh successively with the corrugations of diemembers 5, when the conveyor travels forwardly and the roller 8 rotatesabout its oblique axisparallel to the corrugations of the conveyor.Preferably the roller 8 is provided .with bearings 9 of the thrust typeat its opposite ends. y

In the operation of the machine the paper web 1 to be obliquelycorrugated, will be fed along 4with the traveling conveyor until thesheet passes under the roller 8, when the oblique corrugations will besuccessively formed in the sheet, each corrugation being NEW YORK,'N.Y., A CORPORA- Y simultaneously formed along its entire f length asabove referred to, and the contraction of the sheet during thecorrugating operation taking place in a lengthwise direction as above,referred to.

The roller 8 in the illustrated form of the invention is not positivelydriven, but derives its motion by meshing with the corrugations of thetraveling conveyor, as above described. A suitable ilumber of stripperfingers l0, operatin in grooves l1 in roller 8, may be employed toseparate the corrugated sheet from the roller,'these stripperfingersbeing shown as mounted upon a bar, 12 extending across themachine in back of roller 8. v.

If desired, stripping members 13 may also be employed to separate the.corrugated sheet from the lower die, operating in conjunction withgrooves 14 in such die.

' It will be understood that the web 1, after being corrugated, willusually have one or more facings applied thereto, to make single ordouble faced corrugated paper board, but

as means already known to the art may be employed for the above purpose,I do not deem4^ it necessary to describe the same herein. y

While a specific embodiment has been described it should be understood.that many changes may be made therein without departing from itsprinciples` as set forth in 'the appended claims.-

I claim:

l. A machine for obliquely corrugating sheet material, having acorrugated traveling conveyor wherein the corrugations run oblique toits path of travel, a corrugating A roller having llongitudinalcorrugations, said roller being rotatable about an axis parallel to theirst mentioned corrugations.

2. A machine lfor obliquely corrugating sheet material, having acorrugated traveling conveyor wherein the corrugations run oblique toits path of travel, and a corrugating roller having corrugatio'nsadapted to mesh with the conveyor corrugations and *4-0 therebyobliquely corrugate a sheet traveling with said conveyor.

3. A vmachine for obliquely corrugating sheet *material, having means'for continuously feeding 'a sheet in a lengthwise direction, andincluding corrugating members on opposite sides of the path of travel ofthe sheetn which have complementary corrugations each extendingobliquely across the path of travelof the sheet and adapted to engagesuccessively substantially all the way across the sheet, thereby to formdiagonal corrugations successively in the sheet and contract the latterin a lengthwise directionV as the corrugations are formed.

4. A machine for obliquely corrugating sheet material, having acorrugated traveling. conveyor wherein the corrugations run oblique toits path of travel, and a corrugating roller having corrugations adaptedto mesh with the conveyor corrugations and thereby obliquely corrugate asheet traveling with said conveyor, said conveyor being of the endlesstype and having a plurality of flat dies carrying its first mentionedcorrugations and adapted to abut when in operating position.

with the conveyor corrugations and thereb .y

obliquely corrugate a sheet traveling wit said conveyor, said conveyorbeing of the endless type and having a plurality of fiat dies carryingits first mentioned corrugations and adapted to abut when in operatingposition, and a guide member enga-ging the operating flight of saidconveyor adapted to maintain the corresponding dies 1n plane andabutting relation. 6. A machine for obliquely corrugating sheet materialhaving a pair of corrugated dies, one of saidv dies being in the form ofa roller Vrotating on an axis oblique to the path of travel of the sheetto be corrugated, andthe corrugations running lengthwise of said roller,and the remaining die being also corrugated obliquely with respect tothe path of travel of the sheet and being adapted to engage tangentiallywith successive corrugations of the roller as the latter rotates. x

7. A machine for obliquely corrugating sheet material having-a pair ofcorrugated dies, one of said dies being inthe form of a roller rotatingon an axis oblique to the path of travel of the sheet to be corrugated,and the corrugations running lengthwise of said roller, and theremaining die being also corrugated obliquely with respeotto'the path oftravel of the sheet and being adapted to engage tangentially withsuccessive corrugations of the roller as the latter rotates, saidremaining die moving in the direction of travel of the sheet.

In testimony whereof I have signed my name to this specification.

JOSHUA .WAGNER

